Omron V780 Series, User Manual

Page: 230 / 398

7 Modbus/TCP Communications
7 - 78 UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
 Response Formats
• Normal Response
• Error Response
 Execution Examples
Example 1) Execution to Set the Following Transmission Powers in the Reader/Writer
Read transmission power: 27 dBm, Write transmission power: 27 dBm
TX: 00000000000BFF10C100000204001B001B
RX: 000000000006FF10C1000002
Example 2) Execution to Set the Following Transmission Powers in the Reader/Writer
TX: 000000000017FF10C100000810001B001B001A001A0019001900180018
RX: 000000000006FF10C1000008
Transmission
power Read trans-
mission
power Specify the transmission power for read RF communications
commands in 4-digit hexadecimal.
000F to 001B hex (15 to 27 dBm) 001B hex
(27 [dBm])
Write trans-
mission
power Specify the transmission power for write RF communications
commands in 4-digit hexadecimal.
000F to 001B hex (15 to 27 dBm) 001B hex
(27 [dBm])
Byte-0 Byte-1 Byte-2 Byte-3 Byte-4 Byte-5 Byte-6 Byte-7 Byte-8 Byte-9 Byte-10 Byte-11
Transaction identi-
fier
Protocol identifier Field length Unit
identifier
Function
code
Register address Word count
X X 0000 hex 0006 hex FF hex 10 hex C100 hex 0002 hex
Parameter Description
Register address The register address from the command is set.
Word count The word count from the command is set.
Byte-0 Byte-1 Byte-2 Byte-3 Byte-4 Byte-5 Byte-6 Byte-7 Byte-8
Transaction identi-
fier
Protocol identifier Field length Unit
identifier
Function
code
Excep-
tion code
X X 0000 hex 0003 hex FF hex 90 hex 1 byte
Parameter Description
Exception code For details, refer to Exception Code on page 7-7 under 7-2-3 Response Format for
Error Completion on page 7-7.
Reader/Writer Read transmission power Write transmission power
Master Reader/Writer 27 dBm 27 dBm
Slave Reader/Writer 1 26 dBm 26 dBm
Slave Reader/Writer 2 25 dBm 25 dBm
Slave Reader/Writer 3 24 dBm 24 dBm
Parameter Description Default setting